Has anyone used this product to fill in missing grout between shower tiles? If so, is it holding up long term?

For wet areas, you need to strictly follow the instructions in order to prevent it from falling apart. Before you apply, make sure the application surface is 100% dry and clean. After you apply it, ventilate the area and wait for 24 hours. If you apply it correcty, it will stick for a longer periods

How can I remove this product from a fiberglass bathtub once it has dried? Is there a product that will aid in its removal? Thank you.

The majority of it should be wiped off an hour after using (per instructions). However, if it has dried on and you're unable to remove it with a dry rag/towel, I'd recommend scraping it off with a plastic putty knife and using something like a magic eraser or other fiberglass-safe cleanser to get the excess off.

Does it fill where grout has come out?

Hello, Good question. Yes, it does. but you may just have to use too many tubes. Thank you

How long until you can get it wet?

I waited about 12 hrs. The package says 3-4 Hours

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Premixed Tile Grout Repair - White (8.8oz/250g) | Acrylic sanded formula, for bathroom shower kitchen tile, water-resistant, applicator included, 24-hour cure, 29 sq ft

Product ID: 273558436

Details

Brand
PENTAUSA
Color
White
Full Cure Time
24 hours
Item Weight
250 g
Liquid Volume
8.8 fluid

⏳2hr touch dry, 24hr full cure

💧Water-resistant, stain barrier

🧱Fills up to 1mm grout gaps

$39.91

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Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Fix it fast, fix it flawless — grout like a pro!

FAST RELIABLE CURE - Touch dry in 2 hours, fully cured in 24 for quick project turnaround.
PRECISION APPLICATION - Premixed tube with anti-clog nozzle and included scraper ensures mess-free, controlled repairs.
DURABLE WATER RESISTANCE - Protects grout lines in wet zones like showers and kitchens with a stain-resistant barrier.
LAYERABLE FOR DEEP REPAIRS - Build thickness with multiple 1mm coats—perfect for both small touch-ups and full bathroom fixes.
READY FOR DIY PROS RENTERS - Low-odor, easy-to-use formula designed for first-timers and rental property maintenance.

PentaUSA Premixed Tile Grout Repair in White is a professional-grade acrylic sanded grout filler designed for quick, durable repairs on tile floors, walls, and countertops. It cures fully in 24 hours, covers up to 29 sq ft per tube at 1mm depth, and offers water resistance ideal for wet indoor areas. The premixed, low-odor formula comes with a precision applicator and scraper, making it perfect for DIY enthusiasts, renters, and homeowners seeking a clean, long-lasting grout fix without the hassle of full regrouting.

Specifications

ASIN	B08QCJYQTM
Best Sellers Rank	#3,020 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #6 in Tile Grout
Brand Name	PENTAUSA
Color	White
Customer Reviews	4.4 4.4 out of 5 stars (4,196)
Full Cure Time	24 hours
Included Components	Grout Tube, Grout Float scraper and Manuals
Initial Hardening Time	2 hours
Item Form	Paste
Item Weight	250 g
Liquid Volume	8.8 fluid ounces
Manufacturer	MCS HOME GOODS
Material Type	Grout
Maximum Gap Fill	1 millimeters
Model	ホワイト
Number of Items	1
Number of Packs	1
Part Number	850074783008
Surface Recommendation	Tile Grout
UPC	781584968411
Unit Count	1 Count
Water Resistance Level	Water Resistant

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$39.91

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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